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兵工学报 ›› 2015, Vol. 36 ›› Issue (12): 2330-2335.doi: 10.3969/j.issn.1000-1093.2015.12.016

• 论文 • 上一篇    下一篇

基于辅助模型粒子滤波的混沌信号降噪方法

杨宏1,2, 李亚安1, 李国辉1,2   

  1. (1.西北工业大学 航海学院陕西 西安 710072; 2.西安邮电大学 电子工程学院陕西 西安 710121)
  • 收稿日期:2015-01-12 修回日期:2015-01-12 上线日期:2016-02-02
  • 通讯作者: 杨宏 E-mail:uestcyhong@163.com
  • 作者简介:杨宏(1980—), 女, 副教授, 博士研究生
  • 基金资助:
    国家自然科学基金项目(51179157)

Noise Reduction of Chaotic Signal Based on Auxiliary Sigma Point Particle Filter

YANG Hong1,2, LI Ya-an1, LI Guo-hui1,2   

  1. (1.School of Marin Science and Technology,Northwestern Polytechnical University,Xi’an 710072,Shaanxi,China;2School of Electronic Engineering, Xi’an University of Posts and Telecommunications, Xi’an 710121,Shaanxi,China)
  • Received:2015-01-12 Revised:2015-01-12 Online:2016-02-02
  • Contact: YANG Hong E-mail:uestcyhong@163.com

摘要: 针对传统的扩展卡尔曼滤波方法和无迹卡尔曼滤波方法不能有效地抑制混沌系统的加性噪声这一问题,给出了辅助模型粒子滤波算法,推导了混沌系统的状态空间描述,提出了一种基于辅助模型粒子滤波的混沌信号降噪方法,并将其用于Lorenz混沌信号的降噪。在叠加高斯噪声情况下对混沌系统进行降噪处理实验。结果表明,所提出的降噪方法对含噪Lorenz混沌信号有着较明显的降噪效果。

关键词: 信息处理技术, 粒子滤波, 混沌信号, 降噪

Abstract: In order to solve the problem of that the traditional extended Kalman filter and unscented Kalman filter methods cannot effectively suppress the additive noise of the chaotic system, an improved particle filter algorithm is presented. The state space description of the chaotic system is derived in detail, and a noise reduction method of chaotic signal based on auxiliary sigma point particle filter is proposed. As an example,Lorenz chaotic signal is used to evaluate the efficiency of the proposed algorithm. The results show that the proposed algorithm has obvious effect on noise reduction for Lorenz chaotic signal with noise.

Key words: information processing technology, particle filter, chaotic signal, noise reduction

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